Question about IBM Netfinity 400W H/S Redundant Power Supply - Replaces 94G7150 - FRU 76H6589 - Swiss power cord (01K7951SE) Power Supply

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Replacing harddrive power supply cord disconnected

I was replacing harddrive when i turned on power nothing happened. I releazed the power cord 6 prong white adapter was unplugged where does it plug back into? I looked everywhere?

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Re: replacing harddrive power supply cord disconnected - IBM Netfinity 400W H/S Redundant Power Supply - Replaces 94G7150 -...

Which motherboard is it?
model #?

Posted on Nov 06, 2007

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Gateway 500s power box when hitting test button powers both fans, but no power to hardrive, dvd, or monitor. I have replaced power supply, motherboard, and harddrive, I have nothing, but green power button...

Does the fan on the power supply run? As you say the power on switch lights up and so does the motherboard, means that the power supply is working. Monitor gets power from the socket on the power supply. Try plugging it in the wall socket. Try to unplug the main power cord from power supply to the motherboard. The one that has a broad plug at the motherboard end. Replug it and they power on the PC.

Sep 11, 2010 | E-Machines Bestec ATX-300-12E Rev. D 300w...

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My gateway desktop PRB 510S, if I turn it off and unplug it or electricity goes off, the computer wont start back again. Wont do anything. No lights no fan, nothing. Then 5 to 10 minutes after I turn it on...

Try connecting a different power supply to it. If the same situation repeats, then it's an internal (motherboard) problem. If the problems go away, then the power supply needs to be replaced.

6 years... I'm surprised the PSU even lasted that long! The power supply is the cheapest part of the PC and usually one of the first parts to fail. Don't worry, a replacement power supply is not too expensive. Good luck!

Dec 02, 2009 | Gateway Emachine Bestec ATX-250-12E PS...

2 Answers

I push the on button and nothing happens. is it


Even though a lot of things might have gone wrong and caused this, especially if where you place the System is not well ventilated, and the CPU becomes very hot, it shuts down automatically...and you will have to wait for a few moments, get a cool environment and power it on. but I will also try and tell you some troubleshooting steps that you can try.

Since you have already checked the power source and all is Ok, then try this out:

Disconnect your PowerPack(Power Supply Unit) from the CPU and try to power your PC with another Power Pack (Power Supply Unit), that you are very sure is working.

If it powers up, then just get a new Power Pack(Power Supply Unit) for system.

If you cant do this yourself, just get a good technician to do it for you.

Try this first and let me know how it goes, so as to know the next step.

Hope this helps.

Nov 21, 2009 | Hi-Pro (HP-P401W) (HPP401W) Power Supply

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1.Cooling fans work?
2.No Signal shown on monitor?
3.Harddrive doesn't make any noise? (To explain. Harddrive is inactive. Not spinning, and the arms aren't moving back, and forth across the platters)

Suggest it's a bad power supply. A common occurrence.

1.Owner fails to keep the inside of the computer clean, and the power supply.

Dust/Dirt/Spider Webs/Lint, you name it, builds up inside. This foreign material clogs up cooling components. Specifically the Processor fan, and Heatsink, plus the power supply fan, and heatsink's inside the power supply.

Processor heats up. Takes more power to run, until eventually it turns off. (Processor's have a thermal limit. Once this thermal limit is exceeded, BIOS turns the processor off)

Power supply heats up. Fan blades and center hub collects Dust/Dirt, as well as heatsink's inside the power supply. Cooling capacity drops tremendously.

Heat = Wasted Energy. The power supply puts out more, and more power to keep up. Eventually components inside the power supply fail. They burn up. (More on this to follow)

2.Cheap power supply. Cheap construction, and cheap materials used. Pre-built computer manufacturers generally use cheaply made power supply's. Saves them money.

A.Gauge of wiring used inside is too small.
B.Electrolytic Capacitors used are of an inferior design, and of cheap quality.
C.Circuit design is below par.
D.Other components used are of low quality.

So how does a bad power supply still light-lights, and spin fans?

Bad power rail.
Personal computer power supply's put out three main voltages.
A.12 Volts
B.5 Volts
C.3.3 Volts

Electrolytic Capacitors used in a power supply are Filters. They filter the incoming AC electricity, and the rectified DC. When one or more capacitors fail, or are failing, a bad power rail results.

1.ALL the lights uses less than 1 Watt.
2.EACH fan uses 2 to 3 Watts.

A typical Processor uses 55 to 125 Watts. Depends on which processor it is.

So you see, you can have enough power to light those lights, spin fans, and even spin the harddrive motor, but not enough to turn the processor on. (Or if it does turn on, not enough to keep it running)

You can easily prove it's the power supply at fault, if you have a known, good, power supply to use for a test.
Another 300 Watt unit that has the same power cables. (Should be stated as has at LEAST the same power cables. It can have more power cables, and these just won't be used)

No processor running you get no signal to the monitor. Computer isn't working to give a signal to the monitor.

Computer is quieter than normal, because you don't hear any harddrive noise. No processor running to access the Operating System on the harddrive. (Or programs and applications)

(Windows XP is an example of an Operating System. O/S)

Just for information, this link gives details of the components inside a harddrive. Gives you more info about the Arms, and Platters I referred to above.
Just thought I would include it. It is not advertising for this website, but is included for reference.

Nov 13, 2009 | Gateway (ATX-300-12EB3) (ATX30012EB3)...

2 Answers

I have a T3626 emachine that I replaced the drive.

check all your ground screws on the motherboard. If that doesn't work try booting it up with out the hard drive. if that doesn't work, pop out the BIOS battery and unplug your computer, let it sit for about a min. and put the battery back in and restart.

Sep 18, 2009 | E-Machines Emachine T5026 power supply **...

1 Answer

Plugged computer back in after move and won't start. green light in mb on.

Actually, there is nothing you can do with the hard drive. If its shorting out the power supply when its pugged in then it is defective. However, most hard drives carry a 3 year warranty from the manufacture. If the drive is younger then 3 years old, I would call the manufacture and get it repaired or replace. Hope this helps . . .

May 16, 2009 | Antec EarthWatts EA380 380-Watt Power...

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System is not workin properly

You might try this. Shut down the computer, disconnect power cords, disconnect everything at the back of the computer, mouse, key board, etc. Open the case, ground yourself by touching an unpainted area of the case and remove the power connectors to ALL optic drives and floppy drive if you have one. (Of course do not disconnect the hdd.)
Reconnect mouse, keyboard, etc., and power cords to wall outlet.
See if it will post now. If it does I say you have a faulty power supply.
I was given a computer which was doa. It would not post, after I tried the above routine it posted then booted to windows.
I replaced the psu and now the computer works fine.
Hope this helps!


Feb 02, 2009 | System Power Supplies

1 Answer

No power

Sounds like its shot. I would suggest dropping in a larger (350-400W) power supply. Also consider a surge protector. A decent one should cost you $20-30. A $5 power bar is nothing more than a single on/off switch for multiple devices.

Jan 24, 2009 | HP Pavilion Replacement 200w Micro ATX PS3...

1 Answer

T5026 won't start up

Unplug the power cord, open the computer and disconnect all the power cables (the cables going from the power supply to motherboard and drives). Then reconnect the power cord and see if the light on the PSU comes on, if so disconnect the power cord and plug in the motherboard connectors and continue connecting components one by one to determine which may be the problem. If no power light with everything disconnected then the PSU needs replaced.

Jan 03, 2009 | E-Machines Emachine T5026 power supply **...

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